Who's online

I like to know at least how many peoploe have visited the site, and have had ‘Visitor Maps and Who’s Online’ installed for quite a while, but I dont know what is the matter with it, but it doesnt work properly. One it doesnt know where half the cities are, and two, 40 people wil have visited but the site stats graphs in the Dashboard will only show 5 people visited…

Is there another visitor stats plugin that actually works?